PLANETARY FLUID PRESSURE TRANSMISSION MECHANISM

PURPOSE:To adapt a transmission gear ratio from a plus change to a zero change and a minus change by changing a reciprocating distance of a piston supported with an oblique turntable by means of movement of an operating lever, and making a fluid movement in a cylinder space vary from a discharge flow to zero discharge and suction flowing. CONSTITUTION:A swash plate 2, whose angle is determined by an operating lever 1, is a bearing supporting tension and pressure being imposed on an oblique turntable 3, and this oblique turntable 3 supports plural pistons 4 at regular intervals, while it is an adjustable joint structure of a turning shaft spherical convex part 5. On the other hand, an inner wall of a pressure case 6 and an outer peripheral wall of a turning shaft cylinder 7 form each cylinder space 8 of these piston 4 at regular intervals, and simultaneously a sliding space lying between both wall convex parts 9 and 10 partitions it to both suction and discharge sides. Then, a reciprocating distance of each piston 4 is varied by movement of the operating lever 1, whereby a fluid movement of an internal space in space between two internal spaces 11 and 12 is changed from a discharge flow to zero discharge and suction flowing.